Magnetic and electric properties of Sn-oxide/M (M=Fe, Ni, Co) multilayers

K. Matsuyama, K. Nishihata, S. Komatsu, Y. Nozaki

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Magnetic and electronic properties of novel semiconductive-oxide/ferromagnet multilayers of Sn-oxide and ferromagnetic metals (Fe, Ni, Co), deposited with a multi-target rf magnetron sputtering system, were studied. Among the studied material systems, Co/Sn-oxide sustains well-defined layer structure and ferromagnetic property for the thinnest thickness of 1 nm. A thermionic CPP transport was observed in [Co(2 nm) /Sn-oxide (4 nm)10, which activation energy was evaluated as 4.4×10-3 erg from the thermal dependence of conductivity. Negative magnetoresistance was observed in two orthogonal directions of in-plane external fields, which confirms spin dependent transport in Sn-oxide thin film. The measured MR change is 0.6 % (δR = 0.8 Ω, Rs=140 Ω) at room temperature.

Original languageEnglish
Pages (from-to)2901-2903
Number of pages3
JournalIEEE Transactions on Magnetics
Volume35
Issue number5 PART 1
DOIs
Publication statusPublished - 1999 Dec 1
Externally publishedYes

Keywords

  • Co/sn-oxide multilayer
  • Current perpendicular to plane
  • Magnetoresistance
  • Spin dependent transport

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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